Changes:

0.2.3
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- mostly cleanups and small fixes
- TCA correction had no effect in previous releases,
  should work now

0.2.2
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- Lanczos interpolation is now used instead of bilinear 
  interpolation for sharper results
- crash on unknown exif is fixed
- settings are stored an reloaded if no exif data is 
  present

0.2.1
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- some minor changes and fixes for windows compatibility.
- a complete windows package including Lensfun library, 
  database and all necessary dependencies is now available
- processing is parallelized on multi core processors 
  using OpenMP

0.2
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- A LOT of code cleanups and stability improvements 
- Bilinear interpolation is now used instead of nearest 
  neighbor interpolation
- Added possibility to correct vignetting and CA (but
  currently no lens in database has correction data for 
  these)

0.1.1
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- Fixed crash on unknown cameras in exif
- Added option to scale corrected image 
  without black borders

0.1 
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Initial release
